Improvement in globe-valves for steam-engines



spindle, being omitted.

'wen- Y@ im Q digital tant www" BENJAMIN Fg PERKINS, OF HOLY-CKE, MASSACHUSETTS.

Letters Patent No. 82,870, dated October` 6, 1868.

The Schedule referred to in .these Letters Patent and making. part of the same.

To all whom it ma/y concern:

Be it known that I, BENJAMIN F. PERKINS, of Holyoke, county of Hampden, and State of Massachusetts, have invented a new and useful Improvement on Valves and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, and to the letters ofreference marked thereon, making a part of this specification, in whieh- Figure 1 is a side elevation, a part in section, of a valve-stand and spindle, to a common globe or anglevalve, the body ofthe valve, and the wheel to turn the Figure 2 is a plan of the improvement.

The same letters indicate like parts in each of the iigures. A

My improvement is on that class ofvalves known as. the globe and angle-valves, and used to stop or regulate the flow of iiuids through pipes, and consists in so combining and arranging a lock-nut with the stand and packing-nut, as to lock the packing-nut, so that it will not turn off when the spindle is tiuned to open the valve.

To enable others to make and use my invention, I will describe its construction and operation, as follows:

A and B, iig. 1, is an ordinary globe or angle-valve, stand, and spindle; C, the packing-nut, and D the nut for locking the same. f

Fig. 2 is a plan of the nut D. I construct D ofthe same internal diameter and the same screw-thread as C. I turn D down on A, fill the space with packing,

turn down O until the packing is suicicntly dense to prevent leakage, when thel lock-nut D is tuined up tight will hold it there; but with the old arrangement, the

packing will adhere to the spindle, causing more friction than there is in the screw-threads on A and O, so that when the spindle B is tiu'n'ed, the packing-nut will turn off from A, and allow the valve to leak around the spindle, or at the `joint between the packing-nut and the stand; but with the use of the nut D, the packing-nut cannot be loosened by turning the spindle, and the packing will last much longer, thus saving much labor `in packing and damage from waste.

I am aware that lock-nuts have long been in use for locking bolts and nuts, also for locking the packingb'oxes on valve-rods on steam-engilies, and I do not claim broadly the use of a lock-nut for confining another nut in' place, nor in any way except as a part of the ar-` rangement and application described; but

What I do claim as new, and desire to secure by Letters Patent, isy The combination and arrangement of the lock-nut D with the stand A and packing-nut C, of a globe or angle-valve, substantially as herein described.v

B. F. PERKINS.

Witnesses:

WM. (l. HEALY, S. F. BARRETT. 

